B.2. Regular expressions
Yes, there''s even more about regular expressions than we
mentioned. Mastering Regular Expressions by
Jeffrey
Friedl is one of the best technical
books we''ve ever read.[399]
It''s half about regular expressions in general, and half about
Perl''s regular expressions. It goes into good detail about how
the regular expression engine works
internally, and why one way of writing a pattern may be much more
efficient than another. Anyone who is serious about Perl should read
this book. Also see the
perlre manpage (and its companion
perlretut and perlrequick
manpages in newer versions of Perl).
[399]And we''re not just
saying that because it''s also published by O''Reilly &
Associates, Inc. It''s really a great book.